Thursday

Thursday is the fifth day of the week in the Judeo-Christian calendar, falling between Wednesday and Friday. In countries that adopt the Sunday-first convention, it is considered the fifth day of the week. However, in ISO 8601 it is the fourth day of the week. In Slavic languages and in Chinese, this day's name is "fourth" (Polish czwartek, Russian четверг, pronounced CHET-vierg). Portuguese, too, uses a number for this day: quinta-feira, "fifth day", (see Days of the week for more on the different conventions).
The contemporary name comes from the Old English Þunresdæg (with loss of -n-, first in northern dialects, from influence of Old Norse Þorsdagr), meaning "Day of Thunor", this being a rough Germanic equivalent to the Latin Iovis Dies, "Jupiter's Day". Most Germanic and Romance-speaking countries use their languages' equivalents: German Donnerstag, torsdag in Scandinavia, Italian giovedì, Spanish jueves, French jeudi, Catalan dijous, and Romanian joi. The Hindi word for Thursday is Guruvar, with Guru being the Sanskrit name for the planet Jupiter.
In Thailand, the color associated with Thursday is orange, see Thai solar calendar.

Thursday in religion

In the Hindu religion, Thursday is Guruvaar, from Guru, the Sanskrit name for Jupiter, the largest of planets. Guruvaar fasting is very common in the various parts of north India.
Quakers traditionally refer to Thursday as "Fifth Day" eschewing the pagan origin of the name "Thursday". The name of the day is also called by words meaning "fifth day" in Icelandic, Modern Greek, Portuguese, and modern Semitic languages.
In the Christian tradition, Maundy Thursday is the Thursday before Easter — the day on which the Last Supper occurred. Ascension Thursday is the day 40 days after Easter, when Christ ascended into Heaven.
In the United States, Thanksgiving Day is an annual festival celebrated on a Thursday in November, currently the fourth Thursday.
A religion (which is a joke version of omphalism) known as Last Thursdayism teaches that the world was created last Thursday, but with the appearance of age: people's memories, history books, fossils, light already on the way from distant stars, and so forth.

Thursday in the United Kingdom

In the United Kingdom, all general elections since 1935 have been held on a Thursday, and this has become a tradition, although not a requirement of the law — which only states that an election may be held on any day "except Saturdays, Sundays, Christmas Eve, Christmas Day, Maundy Thursday, Good Friday, bank holidays in any part of the United Kingdom and any day appointed for public thanksgiving and mourning". An explanation sometimes given for the choice of Thursday as polling day is that it was, in most towns, the traditional market day, although it has also been observed that the choice has practical advantages — with the outcome of the election being known by Friday, the new or continuing administration then has the weekend to organize itself in preparation for the "government shop opening for business" on Monday, the first day of the new week following the election.
Additionally, local elections are usually held on the first Thursday in May.
The Thursday before Easter is also known as Maundy Thursday or Sheer Thursday in the United Kingdom, traditionally a day of cleaning and giving out Maundy money.
In Latin the Genitive or possessive case of Jupiter was Jovis and as such in most Romance languages with the exception of Portuguese it became the word for Thursday: Latin Jovis Dies, Spanish Jueves, Italian Giovedi, and Rumanian Jiuvidi.

Astrological and Astronomical sign

The astrological and astronomical sign of the planet Jupiter (Jupiter) represents Thursday with similar names in Latin-derived languages, such as the French Jeudi. In English, this became "Thor's Day," since the Roman god Jupiter was identified with Thor in northern Europe.
In The Hitchhiker's Guide to the Galaxy by Douglas Adams, the character Arthur Dent says "This must be Thursday. I could never get the hang of Thursdays". A few minutes later the planet Earth is destroyed. Thor, for whom the day was named, also appears later in the Hitchhiker's series and in other Adams books. Appropriately, in The Long Dark Tea-time of the Soul, one of the characters says to Thor: "I'm not used to spending the evening with someone who's got a whole day named after them".
http://en.wikipedia.org/wiki/Thursday